Re: [STABLE 6.12/6.14] Bluetooth MediaTek controller reset fixes

On Thu, May 08, 2025 at 05:00:44PM +0930, Geoffrey D. Bennett wrote:

Hi stable@vger.kernel.org,

Could you please apply:

1. Commit a7208610761ae ("Bluetooth: btmtk: Remove resetting mt7921

before downloading the fw") to v6.12.x (it's already in v6.14).

2. Commit 33634e2ab7c6 ("Bluetooth: btmtk: Remove the resetting step

before downloading the fw") to v6.12.x and v6.14.x.

These fixes address an issue with some audio interfaces failing to initialise during boot on kernels 6.11+. As noted in my original analysis below, the MediaTek Bluetooth controller reset increases the device setup time from ~200ms to ~20s and can interfere with other USB devices on the bus.

Now queued up, thanks.

greg k-h